Does Islam Prohibit Images Or Not?"There are strong theological precepts against the creation of likenesses of living things, and above all of religious figures, especially Muhammad. And yet lush vegetation in mosaic form garlands the façade of the Umayyad mosque in Damascus, devotional pictures of members of the prophet's family are common among Shias, and merchants in the Tehran bazaar sell pendants with Muhammad's portrait on them."
The Guardian (UK) 12/28/12